Unless waived under Sec. 153.483 or Sec. 153.491, each Category C NLS cargo tank on ships built before July 1, 1986 must meet the following:
(a) Unless the tank meets the interim standard provided by paragraph (b) of this section, the tank must have a stripping quantity determined under 153.1604 that is less than 0.95 m\3\.
(b) Before October 3, 1994, the tank may have a total NLS residue determined under Sec. 153.1608 that is less than 3.0 m\3\ or 1/1000th of the tank's capacity.